Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-19 | 305/20-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25 (635.1) | 28.8 (731.6) | 3.8 (96.5) 15.2% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 78.55 (1995.23) | 90.49 (2298.39) | 11.94 (303.16) 15.2% |
| Sidewall Height inches (mm) | 3 (76.25) | 2.4 (61) | -0.6 (-15.25) -20% |
| Revolutions per mile (km) | 806.6 (501.2) | 700.21 (435.09) | -106.39 (-66.11) -13.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.04 mph (37.08 km/h) |
| 25 mph (40.23 km/h) | 28.8 mph (46.35 km/h) |
| 30 mph (48.28 km/h) | 34.56 mph (55.62 km/h) |
| 35 mph (56.33 km/h) | 40.32 mph (64.89 km/h) |
| 40 mph (64.37 km/h) | 46.08 mph (74.16 km/h) |
| 45 mph (72.42 km/h) | 51.84 mph (83.42 km/h) |
| 50 mph (80.47 km/h) | 57.6 mph (92.69 km/h) |
| 55 mph (88.51 km/h) | 63.36 mph (101.96 km/h) |
| 60 mph (96.56 km/h) | 69.12 mph (111.23 km/h) |
| 65 mph (104.61 km/h) | 74.88 mph (120.5 km/h) |
| 70 mph (112.65 km/h) | 80.64 mph (129.77 km/h) |
| 75 mph (120.7 km/h) | 86.4 mph (139.04 km/h) |
| 80 mph (128.75 km/h) | 92.16 mph (148.31 km/h) |
| 85 mph (136.79 km/h) | 97.92 mph (157.58 km/h) |
| 90 mph (144.84 km/h) | 103.68 mph (166.85 km/h) |
| 95 mph (152.89 km/h) | 109.43 mph (176.12 km/h) |
| 100 mph (160.93 km/h) | 115.19 mph (185.39 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1782 | 2070 | 2229 | 2328 | 2434 | 2510 | 2593 | 2692 | 2828 | 2965 | 3116 | 3238 | 3458 | 3700 | 3890 | 4011 | 4079 | 4330 | 4678 | 5437 |
Better Fuel Economy Factory Ratios Increased Power
